[PainVision].

Visual analogue pain scale (VAS) is believed to be a gold standard to evaluate pain intensity. However in practice it is not so easy to evaluate pain intensity by conventional assessment tool including VAS. Especially VAS is considered to be affected by a patient's mental state. Recently a newly developed device PainVision PS-2100 (Nipro Co., Osaka, Japan) for the quantitative analysis of perception and pain sensation was used to obtain pain intensity as "degree of pain". A new device PainVision calculating a "degree of pain" in addition to VAS may be a helpful tool to assess pain in cancer pain.